src/ap/ieee802_1x.h

   1 /*
   2  * hostapd / IEEE 802.1X-2004 Authenticator
   3  * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #ifndef IEEE802_1X_H
  10 #define IEEE802_1X_H
  11
  12 struct hostapd_data;
  13 struct sta_info;
  14 struct eapol_state_machine;
  15 struct hostapd_config;
  16 struct hostapd_bss_config;
  17
  18 #ifdef _MSC_VER
  19 #pragma pack(push, 1)
  20 #endif /* _MSC_VER */
  21
  22 /* RFC 3580, 4. RC4 EAPOL-Key Frame */
  23
  24 struct ieee802_1x_eapol_key {
  25         u8 type;
  26         u16 key_length;
  27         u8 replay_counter[8]; /* does not repeat within the life of the keying
  28                                * material used to encrypt the Key field;
  29                                * 64-bit NTP timestamp MAY be used here */
  30         u8 key_iv[16]; /* cryptographically random number */
  31         u8 key_index; /* key flag in the most significant bit:
  32                        * 0 = broadcast (default key),
  33                        * 1 = unicast (key mapping key); key index is in the
  34                        * 7 least significant bits */
  35         u8 key_signature[16]; /* HMAC-MD5 message integrity check computed with
  36                                * MS-MPPE-Send-Key as the key */
  37
  38         /* followed by key: if packet body length = 44 + key length, then the
  39          * key field (of key_length bytes) contains the key in encrypted form;
  40          * if packet body length = 44, key field is absent and key_length
  41          * represents the number of least significant octets from
  42          * MS-MPPE-Send-Key attribute to be used as the keying material;
  43          * RC4 key used in encryption = Key-IV + MS-MPPE-Recv-Key */
  44 } STRUCT_PACKED;
  45
  46 #ifdef _MSC_VER
  47 #pragma pack(pop)
  48 #endif /* _MSC_VER */
  49
  50
  51 void ieee802_1x_receive(struct hostapd_data *hapd, const u8 *sa, const u8 *buf,
  52                         size_t len);
  53 void ieee802_1x_new_station(struct hostapd_data *hapd, struct sta_info *sta);
  54 void ieee802_1x_free_station(struct sta_info *sta);
  55
  56 void ieee802_1x_tx_key(struct hostapd_data *hapd, struct sta_info *sta);
  57 void ieee802_1x_abort_auth(struct hostapd_data *hapd, struct sta_info *sta);
  58 void ieee802_1x_set_sta_authorized(struct hostapd_data *hapd,
  59                                    struct sta_info *sta, int authorized);
  60 void ieee802_1x_dump_state(FILE *f, const char *prefix, struct sta_info *sta);
  61 int ieee802_1x_init(struct hostapd_data *hapd);
  62 void ieee802_1x_deinit(struct hostapd_data *hapd);
  63 int ieee802_1x_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
  64                          const u8 *buf, size_t len, int ack);
  65 int ieee802_1x_eapol_tx_status(struct hostapd_data *hapd, struct sta_info *sta,
  66                                const u8 *data, int len, int ack);
  67 u8 * ieee802_1x_get_identity(struct eapol_state_machine *sm, size_t *len);
  68 u8 * ieee802_1x_get_radius_class(struct eapol_state_machine *sm, size_t *len,
  69                                  int idx);
  70 const u8 * ieee802_1x_get_key(struct eapol_state_machine *sm, size_t *len);
  71 void ieee802_1x_notify_port_enabled(struct eapol_state_machine *sm,
  72                                     int enabled);
  73 void ieee802_1x_notify_port_valid(struct eapol_state_machine *sm,
  74                                   int valid);
  75 void ieee802_1x_notify_pre_auth(struct eapol_state_machine *sm, int pre_auth);
  76 int ieee802_1x_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen);
  77 int ieee802_1x_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
  78                            char *buf, size_t buflen);
  79 void hostapd_get_ntp_timestamp(u8 *buf);
  80 char *eap_type_text(u8 type);
  81
  82 const char *radius_mode_txt(struct hostapd_data *hapd);
  83 int radius_sta_rate(struct hostapd_data *hapd, struct sta_info *sta);
  84
  85 #endif /* IEEE802_1X_H */